From low-fat confetti to promises of no Kiss Cam moments, Michelle Obama gives her Top 10 for Letterman

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First lady Michelle Obama reads the "Top Ten Reasons to Watch the Democratic National Convention."

Michelle Obama is becoming a regular on the "Late Show with David Letterman."

The first lady made her fourth appearance on Letterman's show Wednesday to help the late night host with his Top 10 list, a night after painting an intimate portrait of her marriage to President Barack Obama at the Democratic National Convention.

This time she provided 10 reasons why Americans should tune in to her party's big event, which culminates Thursday with President Obama taking the convention stage in Charlotte, N.C. to make the case for his re-election.